Inclosed flaming-arc lamp.



T. L. CARBONE.

INCLOSED FLAMING ARC LAMP.

APPLICATION FILED JULY 28. 1911.

1,154,093. Patented- Sept, 21, 1915.

' proved to be a source of great inconvenience UNITED STATES PA ENT. OFFICE.

TITO LIVIO CARBONE, OF CHARLOTTENIQURG, GERMANY ASSIGNOR EEO-GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

INCLOSED FLAMING-ARC LAMP.

Specification of Letters Patent.

Application filed July 28,1911. Serial No. 641,145.

To all (whom. it may concern: I Be it known that I, Trro LIVIO CARBONE, a citizen of the-Empire of Germany, and a resident of Charlottenburg, Germany, have .invented certain new and useful Improveof combustion takes place, these products rising into a condensing chamber where the solid matter contained in them is largely deposited, and then returning to the arc inclosing globe, still carrying with them some.

solid matter which is deposited in the globe, but remote from the portion thereof which is designed to emit light. The air which is primarily in the arc inclosure and that which afterwardis sparingly admitted, contains, of necessity, water vapor, and this has in'that it combines with some of the prod- I nets of combustionand forms an etching medium whereby the inner wall of the globe is being etched and its transparency or translucency is permanently impaired; also the 'deposition of the moisture upon the globe promotes the adherence of the solid prodnets of combustion'thereto; it also causes deposition of products of combustion on suchparts of the globe where it would not otherwise occur.

Vith the View of overcoming these .defects, it is the object of my invention to make and keep the air in the arc inclosure dry, and I accomplish this by placing a moisture absorbing material in the arc inclosure at such place where the circulating gases have to pass and where it does not impede the emission of light.

In the accompanying drawing I haveillust ated one embodiment of my invention as Figure 1 is a side elevation, partly insection, of the lamp equipped with my improvement; Fig. 2 is a plan view of the container for the absorbing material on a reduced scale, and Fig. 3 is an elevation of a portion of the container viewed at right angles of the section plan 33, Fig. 2.

' The are inclosure is composed of the glass globe 11 and the condensing chamber 12, and it"will be understood that the mineralized electrodes are suitably mounted and regulated as is customary in such lamps. The glass globe is held against the condensing chamber by bails as usual and air is only sparingly admitted to the arc inclosure at the places where the upper electrode passes into the inclosure and where the holder of the lower electrode (not here shown), descends into the globe; some little air may also leak in where the upper edge of the globe is seated against, the condensing chamber. All these matters are well known and need not be described in detail.

Within the condensing chamber, in the bottom thereof, near or at the periphery, the absorbing material is placed, preferably held in a hose-shapedwire netting or screen Patented Sept. 21, 1915.

13. The absorbing material used isby pref- V drawing. The location of the absorbing material in the bottom of the condensing chamber is such that the circulating gases carrying. moisturewill pass in contact with that material, so that it will act to greatest aidvantage as a moisture absorber. The meshes of the wire screen hose are so wide that the circulation of the gases through them is not appreciably impeded. The Wire gauze container of the absorbing material is a convenient means for inserting and for removing for renewal the absorbing material.

I have found that the use of the absorbing material in the location indicated is quite eifective to keep the air in the arc inclosure practically free of moisture, so that no etching fluids are formed and the other inconveniences hereinbefore indicated are deposition therein of the products of com- 2 my invention, I have signed my name in bustion, a hose of Wire gauze within the conpresence of two subscribing-witnesses. densing chamber in the path of the circulat- TITO LIVIO CARBONE.

ing gases; containing blocks of moisture ab- Witnesses:

- 5 sorbing material, substantially as described. WOLDEMAR HAUPT,

In testimony, that-I claim the foregoing as HENRY HASPER. i 

